Search Publications
Propagation pattern of low frequency waves in the terrestrial magnetosheath
Glassmeier, K. -H.; Narita, Y.
Propagation pattern (distribution of phase velocities) is determined in three dimensions in the terrestrial magnetosheath on a statistical basis using Cluster spacecraft observations. It is found that the anti-sunward propagation dominates and that the propagation direction is toward the magnetosheath flank at smaller zenith angles, while it is to…
Flux closure during a substorm observed by Cluster, Double Star, IMAGE FUV, SuperDARN, and Greenland magnetometers
Wild, J. A.; Lucek, E. A.; Milan, S. E. +5 more
We examine magnetic flux closure during an extended substorm interval on 29 August 2004 involving a two-stage onset and subsequent re-intensifications. Cluster and Double Star provide observations of magnetotail dynamics, while the corresponding auroral evolution, convection response, and substorm current wedge development are monitored by IMAGE F…
Cluster observations of a structured magnetospheric cusp
Balogh, A.; Fazakerley, A. N.; André, M. +8 more
On 18 April 2002 the Cluster spacecraft crossed through the northern outer magnetospheric cusp region during 16:25-17:55 UT when the solar wind dynamic pressure was rather low (<2 nPa) and IMF Bz was more negative than IMF By. The Cluster data from the FGM, CIS, PEACE, EFW, WHISPER and STAFF instruments reveal that the cus…
VLF/ELF wave activity in the vicinity of the polar cusp: Cluster observations
Zong, Q. -G.; Lucek, E.; Maksimovic, M. +9 more
Observations by the Cluster spacecraft of VLF/ELF wave activity show distinct signatures for different regions in the vicinity of high altitude polar cusps, which are identified by using magnetic field and plasma data along spacecraft trajectories. These waves include: (1) Broad band magnetic noise observed in the polar cusp at frequencies from se…
Alfvénic turbulence in solar wind originating near coronal hole boundaries: heavy-ion effects?
Bavassano, B.; Pietropaolo, E.; Bruno, R. +1 more
The mid-latitude phases of the Ulysses mission offer an excellent opportunity to investigate the solar wind originating near the coronal hole boundaries. Here we report on Alfvénic turbulence features, revealing a relevant presence of in-situ generated fluctuations, observed during the wind rarefaction phase that charaterizes the transition from f…